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<table width="100%" summary="page for mastectomy"><tr><td>mastectomy</td><td align="right">R Documentation</td></tr></table>

<h2> Survival Times after Mastectomy of Breast Cancer Patients </h2>

<h3>Description</h3>


<p>Survival times in months after mastectomy of women with breast cancer. 
The cancers are classified as having metastized or not based on a 
histochemical marker. 
</p>


<h3>Usage</h3>

<pre>data("mastectomy")</pre>


<h3>Format</h3>


<p>A data frame with 42 observations on the following 3 variables.
</p>

<dl>
<dt>time</dt><dd><p>survival times in months.</p>
</dd>
<dt>event</dt><dd><p>a logical indicating if the event was observed (<code>TRUE</code>)
or if the survival time was censored (<code>FALSE</code>).</p>
</dd>
<dt>metastized</dt><dd><p>a factor at levels <code>yes</code> and <code>no</code>.</p>
</dd>
</dl>



<h3>Source</h3>


<p>B. S. Everitt and S. Rabe-Hesketh (2001),
<EM>Analysing Medical Data using S-PLUS</EM>, Springer, New York, USA.
</p>


<h3>Examples</h3>

<pre>

  data("mastectomy", package = "HSAUR")
  table(mastectomy$metastized)
</pre>


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